It looks like Apple has started rejecting apps which offer Flickr export. More specifically, it is rejecting apps which allow you to authenticate your Flickr account using an in-app browser view.

Why? Because it is possible to navigate away from the authentication page and find a page from which you can buy a Pro Flickr account. This violates rule 11.13, which we last saw when Dropbox-enabled apps were rejected last year.

When Twitter released its new guidelines last week, it quickly became clear that third-party clients would be hit hardest by the company’s latest rules. However, it seems third-party developers aren’t quite as concerned as the rest of us. Tapbots quickly confirmed that Tweebot development wouldn’t change, and now Iconfactory has confirmed that it will continue development on an “all-new” Twitterrific as planned — unfazed by Twitter’s new rules.

It looks like they're having fun, but Apple's secret rules are nothing to smile about.

Any Apple fan would love to know what goes on behind the scenes at their local Apple store, but unfortunately the company’s obsession with secrecy means the only way to do that is to get a job there. It seems like a great place to work; after all, who wouldn’t want to play with Apple devices all day and then tell people why they’re so great?

But did you know that on their days off, every Apple staffer has to workout rigorously to ensure they are strong enough to carry the store’s cash from the tills to the vault? This is just one of the secret rules every retail employee must follow each day. Thanks to the Joy of Tech, we can take a glimpse at some more of them.